#!/usr/bin/env ruby

# ---------------------------------------------------------------------------- #
# Copyright 2002-2023, OpenNebula Project, OpenNebula Systems                  #
#                                                                              #
# Licensed under the Apache License, Version 2.0 (the "License"); you may      #
# not use this file except in compliance with the License. You may obtain      #
# a copy of the License at                                                     #
#                                                                              #
# http://www.apache.org/licenses/LICENSE-2.0                                   #
#                                                                              #
# Unless required by applicable law or agreed to in writing, software          #
# distributed under the License is distributed on an "AS IS" BASIS,            #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.     #
# See the License for the specific language governing permissions and          #
# limitations under the License.                                               #
# ---------------------------------------------------------------------------- #

###############################################################################
# This script is used to export a VMDK from a vCenter DS to a Marketplace
###############################################################################

ONE_LOCATION ||= ENV['ONE_LOCATION']

if !ONE_LOCATION
    RUBY_LIB_LOCATION ||= '/usr/lib/one/ruby'
    GEMS_LOCATION     ||= '/usr/share/one/gems'
else
    RUBY_LIB_LOCATION ||= ONE_LOCATION + '/lib/ruby'
    GEMS_LOCATION     ||= ONE_LOCATION + '/share/gems'
end

# %%RUBYGEMS_SETUP_BEGIN%%
if File.directory?(GEMS_LOCATION)
    real_gems_path = File.realpath(GEMS_LOCATION)
    if !defined?(Gem) || Gem.path != [real_gems_path]
        $LOAD_PATH.reject! {|l| l =~ /vendor_ruby/ }

        # Suppress warnings from Rubygems
        # https://github.com/OpenNebula/one/issues/5379
        begin
            verb = $VERBOSE
            $VERBOSE = nil
            require 'rubygems'
            Gem.use_paths(real_gems_path)
        ensure
            $VERBOSE = verb
        end
    end
end
# %%RUBYGEMS_SETUP_END%%

$LOAD_PATH << RUBY_LIB_LOCATION
$LOAD_PATH << File.dirname(__FILE__)

require 'opennebula'

drv_action_enc = STDIN.read

drv_action = OpenNebula::XMLElement.new
drv_action.initialize_xml(Base64.decode64(drv_action_enc),
                          'DS_DRIVER_ACTION_DATA')

img_source = drv_action['/DS_DRIVER_ACTION_DATA/IMAGE/SOURCE']
img_size = drv_action['/DS_DRIVER_ACTION_DATA/IMAGE/SIZE']
md5 = drv_action['/DS_DRIVER_ACTION_DATA/IMAGE/TEMPLATE/MD5']
md5 ||= '-'

ds_id = drv_action['/DS_DRIVER_ACTION_DATA/DATASTORE/ID']

if img_source.nil?
    message = 'Not enough information to export the image, '\
              'missing image source.'
    STDERR.puts message
    exit(-1)
end

# Create vcenter url with all needed information to extract the file from
# the vCenter datastore

vcenter_url_img = "vcenter://#{img_source}?"\
                  "param_dsid=#{ds_id}"

# Create import info document for marketplace import script

puts "<IMPORT_INFO>
        <IMPORT_SOURCE><![CDATA[#{vcenter_url_img}]]></IMPORT_SOURCE>
        <MD5><![CDATA[#{md5}]]></MD5>
        <SIZE><![CDATA[#{img_size}]]></SIZE>
        <FORMAT>VMDK</FORMAT>
        <DISPOSE>NO</DISPOSE>
</IMPORT_INFO>"
